2013年职称英语备考每日练习理工类20_第2页

　　 Sugar-eating fuel cells could be an efficient way to make electricity．Sugar is easy to find． And the new fuel cells that run on it are biodegradable，so the technology wouldn’t hurt the environment．The scientists are now trying to use different enzymes that will get more power from sugar．They predict that popular products may be using the new technology in as little as 3 years．
　　 词汇：
　　 enzyme/5enzaIm/n．酶 electrode/I5lektrEJd/n．电极platinum/5plAtinEm/n．铂，白金 membrane/5membrein/n．膜，薄膜
　　 electron/I5lektrRn/n．电子 oxidize/5Cksi7daiz/v．氧化degrade/di5reid/v．降解 glucose/5lu:kEus/n．葡萄糖
　　 polymer/5pClimE/n．聚合物 biodegradable/7baiEudi5reidEbl/adj．能进行生物降解的
　　 microenvironment n．微环境 embed/im5bed/v．埋置，插入
　　 proton/5prEutCn/n．质子

　　 试题
　　 1． According to the first paragraph，when can we share our sweet drinks with our cell phones?
　　 A When enzymes can be commonly found in living ceils．
　　 B When the technology of producing a new type of fuel cell appears．
　　 C When the technology of a new type of fuel cell is suitable for mass production．
　　 D When the technology of mass producing cell phones appears．
　　 2． What trouble did Minteer and Klotzhach have in their research?
　　 A They had trouble keeping enzymes in fuel cells active．
　　 B They had trouble keeping biological cells active．
　　 C They had trouble producing fresh enzymes．
　　 D They had trouble finding mechanism for producing enzymes．
　　 3． According to Paragraph 5，electrons are released
　　 A when bags of enzyme are embedded in the new fuel cell．
　　 B when glucose from a sugary liquid goes through the enzyme．
　　 C when the enzyme oxidizes the glucose from a sugary liquid that goes through
　　 a pocket．
　　 D when the enzyme oxidizes the sugary liquid that goes through a pocket．
　　 4． What is exciting about the new fuel cells?
　　 A Their limitless power generation capacity is amazing．
　　 B Their limited power generation capacity is a good beginning．